Solid carbide boring bar opinions

[JamesnTN]

im now in the market for special tooling for the lathe I purchased.
Can someone offer input if this is any good or not? I work in a shop where we machine airplane parts so nothing we have remotely comes close to small.

If you guys know or have a preference for a solid carbide indexable boring bar brands and stock numbers are greatly appreciated.


https://www.maritool.com/Indexable-...LID-CARBIDE-BORING-BAR-.250/product_info.html

 

[boltfluter]

Circle makes a very nice solid carbide bar. I would buy something that has sharp carbide inserts.

Paul

www.boltfluting.com

 

[Bamban]

Look at Thinbit. I am using one of theirs, 1/4 solid carbide with a micro Trigon insert.

http://www.thinbit.com/

 

[shortgrass]

You are working with barrels/firearms? Can you keep the SF up far enough to take advantage of the fine finishes carbides can produce? A carbide shank boring/threading bar is desirable as it is 'stiff' and resists deflection. But I find HS cutting edges to be more desirable because I have trouble staying up there at 300-350SFM (or more) on much of the work that gunsmith machining is on a manual machine.

 

[ridgeway]

This is a nice solid carbide boring bar. Works great for boring muzzle brakes to size. Expensive when you need to buy a 10 pack of inserts, lol. https://www.grizzly.com/products/Solid-Carbide-Mini-Boring-Bar-5mm-Shank-Right-hand/T10248

Micro 100 solid boring bars are nice too...bunch on eBay.

 

[Tim Singleton]

Check out
Arthur r warner tool company for nice hss cutting and boring

 

[Bamban]

This is a nice solid carbide boring bar. Works great for boring muzzle brakes to size. Expensive when you need to buy a 10 pack of inserts, lol. https://www.grizzly.com/products/Solid-Carbide-Mini-Boring-Bar-5mm-Shank-Right-hand/T10248

Micro 100 solid boring bars are nice too...bunch on eBay.

Ridgeway,

I bought a couple of the Micro 100 boring bars you recommended a few months back and still on the first one, the other unopened. The ThinBit is nice I used it boring a deeper hole the Micro 100 could not reach. When I bought the kit they were running a special with the inserts at almost give away price.

 

[WSnyder]

Circle makes a very nice solid carbide bar. I would buy something that has sharp carbide inserts.

Paul

www.boltfluting.com

Circle Machine was bought up by Kennametal (MSC) and is now Widia in case anybody goes looking for them. I have several of the original Circle brand in a triangle insert style that work well. They make (or made) a 1/4" bar that is great for pre-boring chambers.

There are inserts these days that work well in manual machines without the need for high surface speed. The trick is to not waste a bunch of money trying to find those inserts that perform well at the lower speeds. I can and do use hand ground tools for some things but for the most part I grab the carbide, just personal preference.

 

[jkohler]

James the widia carbide boring bars are very nice. type F is the ones I've had the best luck with. Mike Bryant turned me on to them years ago. If you'd like I can get you a part number.
I also like the ccgt or ccmt inserts. Ive really like Mitsubishi inserts. I great finishes out of these. There for dry cutting.

 

[JamesnTN]

Thanks for input guys I picked up a Iscar E10M-STDPR-09X


http://www.iscar.com/eCatalog/Item.aspx?cat=3601991&fnum=1579&mapp=IS

 

[butchlambert]

Thanks for input guys I picked up a Iscar E10M-STDPR-09X


http://www.iscar.com/eCatalog/Item.aspx?cat=3601991&fnum=1579&mapp=IS

The one you referred to is about .420" wide at the insert tip. Not for prebore on most chambers.

 

[WSnyder]

Circle Machine 1/4" FCBI bar and inserts. Works well for pre-bore.
Widia FCBI page: http://www.widia.com/en/products/30...271/64486107/37658491/38757653/100007602.html